Question

Tìm x biết:   x+(x+1)+(x+2)+(x+3)+....+(x+2009)=2009.2010

Answer 1

=> 2010.x + 1+2+3+...+2009 = 2009.2010

=>2010.x  + 2009.2010 : 2 = 2009.2010

=> 2010 .x = 2009.2010:2

= 2019045

=> x = 1004,5

Answer 2

hihi mik cũng làm zậy

Answer 3

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Answer 4

Tìm x biết:   x+(x+1)+(x+2)+(x+3)+....+(x+2009)=2009.2010